F27D 99/0073
Seals
Official title: {Seals}
F27D99/0073 (Seals) appears on 304 US grants and 175 published applications in this corpus.
Search patents in F27D- Granted patents
- 304
- Published applications
- 175
- Assignees
- 231
- Inventors
- 688
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 9 | 0 |
| 1981 | 7 | 0 |
| 1982 | 4 | 0 |
| 1983 | 6 | 0 |
| 1984 | 9 | 0 |
| 1985 | 7 | 0 |
| 1986 | 6 | 0 |
| 1987 | 5 | 0 |
| 1988 | 9 | 0 |
| 1989 | 11 | 0 |
| 1990 | 14 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 10 | 0 |
| 1994 | 9 | 0 |
| 1995 | 4 | 0 |
| 1996 | 6 | 0 |
| 1997 | 11 | 0 |
| 1998 | 11 | 0 |
| 1999 | 12 | 0 |
| 2000 | 7 | 0 |
| 2001 | 6 | 1 |
| 2002 | 7 | 5 |
| 2003 | 6 | 6 |
| 2004 | 8 | 5 |
| 2005 | 0 | 3 |
| 2006 | 4 | 3 |
| 2007 | 1 | 5 |
| 2008 | 3 | 6 |
| 2009 | 1 | 4 |
| 2010 | 4 | 11 |
| 2011 | 1 | 7 |
| 2012 | 3 | 3 |
| 2013 | 2 | 7 |
| 2014 | 6 | 6 |
| 2015 | 7 | 12 |
| 2016 | 6 | 9 |
| 2017 | 5 | 7 |
| 2018 | 12 | 11 |
| 2019 | 10 | 6 |
| 2020 | 9 | 9 |
| 2021 | 3 | 9 |
| 2022 | 6 | 5 |
| 2023 | 5 | 10 |
| 2024 | 5 | 6 |
| 2025 | 8 | 10 |
| 2026 | 5 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Sealing structure of horizontal rotary pyrolysis kiln1 Sep 2026US 12,723,811 B2Henan Longcheng Coal High Efficiency Technology Application Co., Ltd.
- Method for providing a rotating shaft into a high pressure, high temperature furnace1 Sep 2026US 12,723,814 B2The Florida State University Research Foundation, Inc.
- Method for providing a rotating shaft into a high pressure, high temperature furnace1 Sep 2026US 12,723,815 B2The Florida State University Research Foundation, Inc.
- Closure for concrete products curing kiln21 Apr 2026US 12,607,407 B2Besser Company
- Apparatus for heating steel products20 Jan 2026US 12,529,520 B2Danieli & C. Officine Meccaniche SpA
- Heat treatment apparatus8 Oct 2026US 2026/0309423 A1Tokyo Electron Limited
- Method for providing a rotating shaft into a high pressure, high temperature furnace24 Sep 2026US 2026/0287260 A1The Florida State University Research Foundation, Inc.
- Method for providing a rotating shaft into a high pressure, high temperature furnace24 Sep 2026US 2026/0287261 A1The Florida State University Research Foundation, Inc.
- Sealing structure for furnace tube, and furnace tube10 Sep 2026US 2026/0266548 A1Changzhou S.C Exact Equipment Co., Ltd.
- Glass furnace11 Jun 2026US 2026/0160497 A1
Most cited
By later US patents
- Pipe curtain for pollution control hood45US 4,245,820 AWheeling-Pittsburgh Steel Corporation · 1981
- Seal assembly for thermal treatment furnaces using an atmospheric gas containing hydrogen gas32US 5,693,288 ANisshin Steel Co., Ltd. · 1997
- Annealing furnace30US 4,846,675 AWorthington Industries, Inc. · 1989
- Wide laminar fluid doors26US 4,823,680 AUnion Carbide Corporation · 1989
- Apparatus for moving a vessel heater cover24US 4,389,191 A1983